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Forum: Troubleshooting and Beginner Help 09-24-2020, 12:00 PM  
K100D Super lens compatibility
Posted By k0og
Replies: 12
Views: 461
Mikey,

Unfortunately, that is NOT a Pentax mount. I'm no expert, but am guessing it's some kind of Canon mount. Someone more knowledgeable than me can tell you for certain what kind it is.

If it was sold as a Pentax-mount lens, the seller should accept a return (or refund your money), as it was incorrectly advertised.

-Joe-
Forum: Digital Processing, Software, and Printing 02-21-2020, 04:37 PM  
Old School Dude Just Got Windows 10--help
Posted By k0og
Replies: 10
Views: 949
Hello, & welcome to the world of modern tech! ;)

I also shoot raw, 100%. For initial screening, I use Faststone Image Viewer (it's free): FastStone Image Viewer, Screen Capture, Photo Resizer ... -- I use Faststone to just browse through the images I download from the camera to cull the obviously-bad ones. Then I use the Pentax Digital Camera Utility (that comes with the camera) to process/tweak the exposure and white balance, exporting the images to a separate folder in high-quality .jpg format. Then I make another pass on the resulting .jpg images with Faststone to crop and resize, exporting to appropriately-sized .jpg images, depending on the intended end use (on-line viewing, printing, further rework). If I will do serious rework on an image, I'll export it as the highest-quality TIFF image and run it through Photoshop where I can work with layers, etc. The Photoshop was a free version of CS2 that was made available online by Adobe a few years ago. However, I rarely need to use Photoshop.

I have experimented with several of the free raw conversion/processing packages (e.g., Raw Therapee, Darktable), and they are good, but I always seem to more-easily get good results from the Pentax DCU.

I hope that helps.

-Joe-
Forum: Troubleshooting and Beginner Help 12-21-2019, 02:25 PM  
Yongnuo Flash Problem
Posted By k0og
Replies: 5
Views: 508
Some ideas to try:

* With the flash off the camera, power on the camera and reset to factory defaults. Then after the reset, turn the camera off, put the flash on, power on the flash FIRST, then power on the camera.

* If the above doesn't fix it, upgrade (or re-install) the latest firmware, then try the above procedure again.

If neither of those work, perhaps your camera has a problem and needs to be sent in for repair. Since the flash works fine on your K30 (I presume you tested it in Av mode there too), it seems likely that the flash is good.

I hope you can get it to work!

Merry Christmas!

-Joe-
Forum: Pentax SLR Lens Discussion 12-16-2019, 06:49 PM  
Vivitar 75-205 f3.5 Aperture issue?
Posted By k0og
Replies: 6
Views: 396
Steve,

It's a little hard to tell with the angles of the pictures you posted, but it does appear that the aperture tab is a little bent. I suppose that could be a problem.

What Not-A-Number suggested is well-worth your reading. In M mode, using the "green" button to set stop-down exposure prior to taking the picture, this lens should work fine. I have one of those, and it is optically VERY good in my opinion!

-Joe-
Forum: Lens Clubs 09-03-2019, 01:03 PM  
The K-Club!
Posted By k0og
Replies: 3,665
Views: 601,534
I haven't posted in a while, so here is a contribution. The recent rainy weather has brought out mushrooms. Here is a cluster in my front yard, then a closeup of an impatiens (touch-me-not) flower. (Taken with Pentax K5, K55mm f1.8 lens @ f2.0 or 2.8, ISO 80.)

-Joe-







(cross-posted from bokeh club)
Forum: Pentax SLR Lens Discussion 09-02-2019, 03:22 PM  
The Bokeh Club
Posted By k0og
Replies: 20,311
Views: 1,803,207
I haven't posted in a while, so here is a contribution. The recent rainy weather has brought out mushrooms. Here is a cluster in my front yard, then a closeup of an impatiens (touch-me-not) flower. (Taken with Pentax K5, K55mm f1.8 lens @ f2.0 or 2.8, ISO 80.)

-Joe-
Forum: Lens Clubs 07-25-2018, 02:38 PM  
Vivitar Lens Club - share the beauty
Posted By k0og
Replies: 937
Views: 176,225
Some impatiens (touch-me-nots), petunia, etc. The impatiens are third-generation as I keep seeds each year and plant them in the spring as a fun project. (Pentax K200D, ISO100, "sunny-16" exposure rules f5.6, f8, f11.)










-Joe-
Forum: Lens Clubs 06-12-2018, 01:41 PM  
The FA Un-Limited Club
Posted By k0og
Replies: 567
Views: 120,261
Here is a wild morning glory in the morning sun. FA 24-90 on K30 (with K50 firmware), post-processed with Topaz Adjust.

-Joe-
Forum: Lens Clubs 05-02-2018, 02:08 PM  
Takumar club
Posted By k0og
Replies: 17,561
Views: 3,349,159
Creamy, dreamy...


(Pentax K200D, ISO100, wide open @f1.4, Cross-posted from Bokeh club)

-Joe-
Forum: Pentax SLR Lens Discussion 05-02-2018, 02:03 PM  
The Bokeh Club
Posted By k0og
Replies: 20,311
Views: 1,803,207
Creamy, dreamy... Wide open @f1.4.

-Joe-
Forum: Pentax SLR Lens Discussion 05-02-2018, 05:00 AM  
So what's the deal with this Takumar 135mm/2.5 I got?
Posted By k0og
Replies: 22
Views: 1,641
Forum: Lens Clubs 04-28-2018, 04:48 PM  
Takumar club
Posted By k0og
Replies: 17,561
Views: 3,349,159
Enjoying a delightful spring afternoon in my back yard, and having fun with my old Super-Macro-Takumar 50mm f4 lens mounted on a Pentax K200D. The violets are dominating the back yard, but a spider is dominating the buttercup..
Forum: Pentax SLR Lens Discussion 04-07-2018, 09:46 AM  
Poor flash performance with A series lens on K-3 compared to DA series
Posted By k0og
Replies: 15
Views: 1,318
I don't have an AF-540FGZ of any kind, but find with the built-in flash all my A-series lenses expose properly at all useable distances (including close-up, as long as I don't have the ISO pushed too high beyond P-TTL adjustment range for closeups) with all my Pentax DSLR bodies. There may be some other factor related to AF as you mention with the AF-540FGZ series flashes, but I don't think that applies to the built-in flash since it does not have AF capabilities like the 540 does. That's been my experience with my bodies and A-series lenses.

-Joe-
Forum: Pentax SLR Lens Discussion 04-07-2018, 09:36 AM  
Poor flash performance with A series lens on K-3 compared to DA series
Posted By k0og
Replies: 15
Views: 1,318
A possible explanation as to why the close-up shots are overexposing is that at closer ranges the lens needs to stop down more due to higher light values in the P-TTL pre-flash light measurement, and if there is a sluggish aperture mechanism it may be not quite closing all the way by the time of exposure hence overexposing the shot. Yet, at greater distances the aperture would not close down much if at all, hence the aperture is responsive enough to close correctly by the time of exposure.

-Joe-
Forum: Pentax SLR Lens Discussion 04-07-2018, 07:05 AM  
Poor flash performance with A series lens on K-3 compared to DA series
Posted By k0og
Replies: 15
Views: 1,318
I have to differ on this point. I have several A-series lenses (both Pentax and non-Pentax brand) and they all expose well in all the auto-exposure modes (including with built-in flash) as long as they are on the "A" setting on the aperture ring. This is with all my Pentax DSLR bodies.

If you are not getting good automatic exposure with the aperture ring in the "A" setting, make sure the electrical contacts on the base of the lens and the lens mount of the camera are clean. Wipe both with a dry lint-free cloth.

However, as mentioned, it is possible your aperture ring is not free and snappy, so there is a delayed closing of the aperture. One way to test this is to remove the lens, set the aperture to the smallest aperture (e.g., f16), pull back on the aperture lever with your fingertip to open the aperture then let loose of the aperture lever. The aperture should instantly snap closed. If it's sluggish, that's a problem. Another way to test more critically with the camera is to put the camera in Av mode, with the aperture on the lens in the "A" position, then with the Av dial, set an aperture of wide open, or nearly wide open (say f2), pop up the flash and take an exposure. It should be a fairly good exposure. Now dial a stopped-down aperture (say f16) and take an exposure of the same object at the same distance with the flash popped up, and see if the exposure is good. If it is significantly overexposed, your aperture may be sluggish. However, note that not every lens is perfect, and some over- or under-expose slightly because of aperture nonlinearities, but it should be fairly close if all is working properly. I have found on all my DSLR bodies that I prefer a -0.3 exposure adjustment of my built-in flash to help prevent blowing highlights in high-contrast subjects.

I hope this helps.

-Joe-

-Joe-
Forum: Pentax SLR Lens Discussion 03-19-2018, 03:28 AM  
The Bokeh Club
Posted By k0og
Replies: 20,311
Views: 1,803,207
Hello,

I tried my K55 f1.8 along with a Vivitar 2x-22 teleconverter for 110mm to see how it worked, and am happy with the results. The lighting is not good with overcast, but there are some signs of spring. Taken with K200D, ISO800, f2.8 (x2 = f5.6).


-Joe-
(Cross-posted from the K club)
Forum: Lens Clubs 03-17-2018, 03:26 PM  
The K-Club!
Posted By k0og
Replies: 3,665
Views: 601,534
Hello,

I tried my K55 f1.8 along with a Vivitar 2x-22 teleconverter for 110mm to see how it worked, and am happy with the results. The lighting is not good with overcast, but there are some signs of spring. Taken with K200D, ISO800, f2.8 (x2 = f5.6).

-Joe-
Forum: Lens Clubs 03-03-2018, 04:39 PM  
Takumar club
Posted By k0og
Replies: 17,561
Views: 3,349,159
Thank you Ray!

Another one...

-Joe-
Forum: Pentax K-30 & K-50 03-03-2018, 07:28 AM  
Post Your K-30 Photos Here
Posted By k0og
Replies: 2,720
Views: 499,567
Crocus in bloom - spring is on the way!


Cross posted from the Takumar thread. Super-Macro-Takumar 50mm f4 on K30 (with K50 firmware), ISO100.
-Joe-
Forum: Lens Clubs 03-03-2018, 07:23 AM  
Takumar club
Posted By k0og
Replies: 17,561
Views: 3,349,159
Crocus in bloom - spring is on the way!

-Joe-
Forum: Pentax DSLR Discussion 02-17-2018, 06:20 PM  
K200D FOCUSING and etc. Questions
Posted By k0og
Replies: 7
Views: 757
Try to get back to basics... Go into the menus and do a complete reset to defaults in the "Set-up->Reset", then program your settings.

The "rumble" when you turn it on is the dust-removal on startup (adjustable in one of the menus, "Set-up->Dust Removal->Start-up action" which is apparently enabled), and the flashing light on the front when you try to take a picture is the indicator light for when the self-timer is activated (Fn button->UP control-pad button->change the drive mode to "Single frame shooting"). The beep is adjustable (or off) in the "Set-up->Beep" menu item.

Enjoy your "new" K200D - a good, solid performer in my opinion. I just "inherited" one from my daughter who no longer used it (she has a K-1, with a K-3 as a backup).

-Joe-
Forum: Pentax DSLR Discussion 01-23-2018, 06:24 AM  
Anyone else miss the K200D?
Posted By k0og
Replies: 1,020
Views: 171,871
Some "old" bokeh - Super-Takumar 35mm f2, wide open, K200D, ISO100.

-Joe-

(cross-posted from the Takumar club)
Forum: Pentax SLR Lens Discussion 01-23-2018, 06:22 AM  
The Bokeh Club
Posted By k0og
Replies: 20,311
Views: 1,803,207
Some "old" bokeh - Super-Takumar 35mm f2, wide open, K200D, ISO100.

-Joe-

(cross-posted from the Takumar club)
Forum: Lens Clubs 01-20-2018, 03:57 PM  
Takumar club
Posted By k0og
Replies: 17,561
Views: 3,349,159
S-T 35mm f2 @ f2 on K200D, enjoying warmer weather today...

-Joe-
Forum: Troubleshooting and Beginner Help 01-18-2018, 08:47 AM  
Pentax K1000 Diopter
Posted By k0og
Replies: 10
Views: 1,622
Matt,

Duhhh! I was getting your need for "-" correction confused with my need for "+" correcton! Never mind... It looks like it would be best to order a proper diopter if you are going to use the K1000 very much.

-Joe-

Wal-Mart has cheap reading glasses, +2.25, for around $5. I suggest that you take your camera in with you and hold up one of these to the eyepiece to see if +2.25 will make it clear. If so, maybe you can cut an insert by hand using a fine-toothed hack saw. That was going to be my next attempt at cutting a piece for my K1000, as I detailed in the thread Adam linked. Even if you don't buy some of those cheap glasses, you could test different diopter factors to see which will work for you (2.0 or 2.5) before you order a diopter.

-Joe-
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